Interlocking automatic lock



June 30, 1925.

c. w. LANPg-IERE INTERLOCKING AUTOMATIC LK Filed Feb. 6, 1923 .3 SheetsSheet 2 u zu HM; y

June 3o, 19:25.A i Y 1,543,930

4 C. W. LA'NPHERE INTERLOCKING' AUTOMATIC LOCK Filed Feb. 6. -1923 3 Sheets-Sheet 3 Patented June 30, 1925.

OLIVE W. LANPHERE, OF NEW YORK, N. Y.'

INTERLOOKING AUTOMATIC LOCK.

AppIeation filed February 6, 1923. Serial No. 617,235.

To all lwhom t may concern.'

Be it known that I, OLIVE W. LANPHERE, a citizen of the United States, residing at New York, county of New York, and State of N ew York, have invented certain new and useful Improvements in Interlocking Automatic Locks, fully described and represented in the following.specification and the accompanying drawings, 4forming a part of the same. i

This invention relates to that class of door-locks in which a curved bolt is used to make a strong connection between'the lock casing and the guard or keeper upon the door-frame. y Y

The curved bolt is fitted to work through twoy apertures upon the lock-case and two corresponding apertures upon the adjoining face of t-he guard, the entire bolt when unlocked lying inside of the lock-case, and its middle portion being loopedaround a post in the guard when the bolt is locked.

The chief object of the invention is to provide means to assure the automatic interlocking of the lock-bolt and the lock-guard when the door is pushed shut. One object is to avoid any partial interlocking of the bolt and its detent when the door is open.

Another object is to provide means whereby the shrinkage of the door or its vframe may be compensated for by making the guard adjust-able toward and away from the face of the lock, so as to maintain the normal relation of the `lock and guard.

Another object is to block or prevent any movement of the boltwhen engaged with the guard. Another object is to protect v the guard from` the action of a jimmy or similar tool. Other features will be referred to herein in connection with the drawing.

The chief object is. effected by fitting a dctent of special construction to engage the edge of the curved bolt, and controlling the operation of such detcnt byatumbler which is moved by the bolt when fully retracted; and a tumbler which locks the bolt in its projected or interlocking position.

The means for blocking any movement of the bolt when projected from thc lock-case, consists of a soecalled bolt-tumbler which is arranged to engage a shoulder upon the bolt when the bolt is fully projected, and which tumbler' is withdrawn from the bolt previous to retracting it, by an arm upon a key or lock-barrelwhich, when turned by a key orknob respectively, operates to withdraw the boltetumbler from the shoulder in the bolt before the retractive movement of the bolt is commenced. j j

The compensation for shrinkage is effected by making the guard or keeper adjustable upon the door-frame and preferably in two parts, whereby one may be rigidly attached to the door-frame and the other part adjustable thereto, so that it may be set close to the lock-face as desired.

The improvementswill be understood by reference to the annexed ldrawingg-in which Fig. l shows a lock with one side removed; and the bolt retracted within the lockecase;

Fig. 2 shows the lockwith its .cover ree moved, the adjacent guard in section, and the bolt projected from the lock-case into the guard; Fig. is a plan of the lock-case with its cover removed; Fig. 4 is a crosssection on line 4-4 in Fig. l; Fig. 5 is a cross section on line 5 5 in Fig. 1; Fig. 6 is a cross section on line 6 6 in Fig. 2; Fig. 7 `is a cross section on lineJT-' in Fig. l; Fig. 8: is an edge View of the bolt and attachments; Fig. 9 is a transverse section of a rim-lock with the door andlock-case adjoining; Fig. 10 shows the relation of the bolt-tumbler and tail when the bolt is retracted; and F ig. 1lV is a plan of the lockcase with the cover removed, and a inodiied form of the boltand the catch for manually holding the bolt inoperative, and shows the parts adjacent to the bolt-tongue with the means for automatically securing it in a locked position.

The. lock-case 2O and, the lock-guard 22 are fitted to slightlyl clear one another when the door 2l is closed,` and a spring and detent are respectively provided to project and lock thebolt when retracted, and a releaser mechanismy normally operates to release the bolt within the lock-case and project thel tongue 24 of the bolt into the guard (as shown in Fig. 2*).

The term guard 7 where' used herein, covers` any form of keeper or lock-plate adapted to cooperate with the curved lockbolt in the manner herein described. j

Provision is made for such'engagement of the guard and bolt by two apertures 25,

in the lock-tace, and two corresponding apertures 26 in the Yface of the guard shown in Fig. 2)`

The-tongue 24 of the bolt is` guided'in a circular path by ribs 27 within the casing,

and the bolt is held-to its curved path,

when the tongue is projected, 'by a Ytailpiece 46, extended from the inner end ot the bolt between the ribs. f I

A stop 3S is provided upon the guiderib of the raceway, Yto limit the retroactive movement ot the tongue, and Ato set theV notch 311, opposite. the detent '32 as in Fig. l.

'.T he bolt 'is shown vprojectedin Fig. 12, by aspirahspringg 47 ,litted to 'n stein 4S cX- tended from the tongue 24 over the tailpiece 46, both passing through .u bearing' 34 which sustains v,the thrust ot Ythe spring'.

A *notch 3l sfs'hown upon the outer side of thebolt ,which when retracted into the casees shownin l1, is engaged bv a spring-detent 32 which I.normally holds tthe holttunlocked Awithin the lockfcesel l f The tongue of thebolt the part which cngagestheguard, andthe tail-piece ,46 the Ameans ,for guiding .and -steadying the tongue .whenit Vis project-ed out. ofthe case.

.Thestein 48exten`ds fromthe yrear -end o't the ,holt to -the Aend of the tail-piece, end

passes with thetailfpiece through a hear-V projects-normally from thecase and moves Y as-oferte piece ywith-thedetent.V These c` 4'1" :acting parts areterined a Q releaser 'herein because the Contact .of the beveled vhead `with the guard pushes the detent nfrom its notch and -relenses the bolt .tor automatic movement to its locked position, shown Vin .'Fig. 2.

iX-springBGnpplied to the yrod 29 presses vthe vdetent normally toward the notch Bil and .presses Vthe beveled heed 35 from the ease. The closing of the door any time .thereafter pushes back the beveled head ,and withdraws Athe Adetent .from the locle Iholt. IItisobvious that the contact ofthe Vbeveled head with the guard 22 when the door is =closed,operates te kpush the detentfrom the notch .3l .and to thus permit the spring `4T to move the .tongue .24. ot' the bolt into and,througlrthe.apertures 25 :and 26.

A vlock-lourrel 30 is journaled .in the Vloch- `caseto befturned by alnob 70, and is provided with an arm 33 to engage a prong 37 upon the inner end ot the tongue. A keybarrel Z is also journaled upon the opposite side'ol: the lock-case to be operated by a key. It is also provided with an arm 71 to engage the prong 37. `When such key orlocl-barrel is turned by a knob or a .key respectively, Aand the bolt is wholly retracted the notch 3l is set opposite the detent32, as shown in Fig. 1. Y

The detents shown operate with anotch or s projection, and it will also be under stood that they may operate with complemental projections, which will have `the same ettect.

The tongue 2451s so .proportioned that its opposite ends engage the "lock-face within the apertures 25, Vfind prevents the tongue trombe-ing er wded outwardly by n. `jiilniny or other implement. H1When the tongue is thus engaged, it embraces `the metalA post 42' between the apertures 26 of the guard; and binds theguardrmly to the lock-case.`

,To insurethe completeinterlocking of the boltwiththe detent, .a detent-tunibler 42 is mounted adjacent to the ,detent to engage the shoulder upon the detent, as shown at 4S,in.Fig. 2, .whichprevents the detentind releaser from .projecting until the bolt has been; drawn Vwholly within the casing.

This `tumbler f42 is pressed toward the side ot the detent b va spring 44, and has .alug 45 projecting inthe path of lthe bolt, as shown in Fig. l, topush the tumbler clear vtrom the shoulderand allow the detent lo enter thernoteh 3l. Then this occurs, the `releeser.under the influence of the spring 36 upon the `rod 29, pressesthe beveled head out ottlie'lockfease, as sliown1in"l `igvi, in ,rezidi'nessto engage the guard when the door is againclosed.

The detent requires a considerable bearingsurtace toresist its impact with the bolt. and the detentand vvnotch 3l are made ot such size and shape. that the detent-r may drop graduallyinto=thelnotch when the bolt .is fully retracted.

The retraction ot ,the bolt by cxternul ineansis preventedby arraTuringr e socalled bolttumbler `to engage u` shoulder in the bolt+tongue .when .fully projected, which construction tullyi'es-ists nnyieturn movenieut otthe tongue when. projected troin'the lochcnse. VThis boltftumbler `isattuated by nu .firm uponithe key or lock-barrels so as to be .detached trom the bolt hetore the bolt can be wetracted. y

In' this arrangement. (see Fig. l1) the bolt-tuinhler() has.aftaperingpawl 5T ut :tached to .a shank' 58 which is Amovable in ,Guides 5T' and is provided adjacent to the:

,locltfbarrel with an inclined arm-seat 6l.

Thearn'is upon the ,lteyvand `lockbarrels are `arranged when 4tiret rmoved 'thereby to press upon .the ,inclined .arm-seat to retract the pawl 57 from its shoulder 62 .in the bolt,

freeing the bolt so that further rotation of the arms is free from further restraint while retracting the boltinto the case. The engagement of such head and shoulder blocks the bolt :trom any movement whatever.

To retract the bolt, the key or lock-barrel is turned by hand, and the arm upon the lock-barrel pushes either the key or bolttumbler upward until its pawl clears the shoulder 62 in the bolt.

Then the bolt is Wholly retracted, the end ot the tail-piece reaches the point of contact (shown in Fig. l0) with the lower end of the. bolt-tumbler and raises it by oblique pressure.

Then the operator ceases to turn the lockbarrel the leaf-spring 65 returns it to its initial position, and'clears the seat 61 in such return movement, because the arm seat is held in its raised position by the contact ot the tail-piece 46 with the lower end of the holt tumbler 57, as shown in Fig'. l0.

It the door be now shut, the detent becomes disengaged from the bolt and t-he bolt is projected yfrom the lock-case into the guard. lVhen the bolt is fully projected, the lower end of the bolt-tumbler engages the shoulder 62, thus locking it again in its projected position, the tumbler being tirst raised by the bolt-end moving across the beveled'end ot the pawl.

in case the wood-work shrinks on which the lock-case or guard is secured, the guard would be so displaced that it would not admit the tongue to its apertures; and means is therefore needed to compensate for such shrinkage, or for displacement from other causes.

in the mortise-lock shown in Fig. 2, the :tace-plate 66 of the guard is clampe-d to the. door-trame 23 by screws 67, and the guard is j provided with loose packing-plates or shims 66 shown underneath the ends of the guard where the screws pass througl'l the same.

The effect of such shims is to raise the tace of the plate somewhat above the surface ot the woodwork, it recessed therein as is usual. Such raising ofthe faceplate 66 erposes its edge to access by a jimmy which is prevented by lieveling the edges of the plate. as shown at 69 in Figs. 2, 6 and 1l.

in Fig. ll the bolt-chamber 63 in the guard has a rear wall curved like the bolttongue, to increase the strength of the guard and protect it from dirt and dust.

In the rim-lock shown in Fig. 9, the guard preferably made in two pieces 50 and 5l., one ot which has a bed-piece 52 attached rigidly to the door-frame, and the other car-- ries the striking-plate 53 and has a -foot 54 secured adjustably to the bed-pieee by a screw 55.

The parts are formed with corresponding ridges 57 which hold them lirmly in their adjusted positions, and permit of readjustment by the slackening' of the clamp-screws.

By the use of the detent-tinnbler de scribed, only the last portion o't the retracting movement of the boltJ has any releasing ettect upon the detent, or secures any engagement ot the detent with the notch.

It is obvious that when the lock-barrel is turned the bolt may be locked inits retracted position by any form ot projecting or com- ]iilementary parts which operates the same as the detent and the notch.

It will be observed that the lock operates automatically to lock the door whenever it is closed. by the action of the releaser upon the detent.

Fig. ll shows a couple ot push-buttons 89 and 4t() fitted movably through the face-plate 66 ot the lock, one of which presses a pushi rod 39 adapted to engage a shoulder or notch 40 upon the inner side of the bolt, when the tongue is wholly retracted. The other push-button is formed upon a shank `ll which is connected with the rod 39 bya simple .lever 19, which enables the first pushbutton to be projected by pressing the second inwardly.

The bolt-tongue has a member, such as a notch 4:0 which is moved in line with the rod 39 when the bolt-tongue is retracted. The pushing` ot such rod into the notch holds the bolt from any movement.

From the above description it will be seen that this invention automatically iuterlocks the door and door-jamb, and affords the utmost resistance to forcing the lock by external means.

` Having thus set forth the nature ot the invention what is claimed herein is:

l. The combination, with a lock having an arc-bolt movable into and out oi its face, of means to project the bolt, means to hold the bolt in its projected position, means to retract the bolt, means to hold the bolt in its retracted position, and a guard having adjustable parts forv varying the relative positions ot the lock and guard.

2. A lock having an arc-shaped bolt, a guide for the bolt, means for projecting the bolt, means for automatically locking the bolt in its projected position, independent barrels operating to retract the bolt, a detent to engage the bolt and hold the bolt retracted, a releaser to disengage the detent from the bolt, means to hold the bolt inoperative when retracted, and an adjustable guard to interlock with the bolt.

3. The combination, with a guard, oit' a lock-case having an arci-bolt with means to project and hold the bolt in its projected position, means to retract the bolt, a detent to engage the bolt, a releaser adapted to project from the lock-case and to disengage the detent, means to project said releaser, a tumbler arranged and operated to prevent lraeeway the releaser Jfrom projecting from the lockcase until the bolt is Wholly retracted.

4. The combination, with a lock-case having an arc-bolt lWith a tongue movable into and out of its face, of a guard to engage such tongue, a detent for securing the bolt Vin its unlocked position, a releaser in one piece with the detent and having a beveled head to engage the guard when ythe door is closed, thus releasing the bolt for automatically locking, `and a tumbler having automatic means to hold the boltin its projected position, anda catch to hold the bolt inoperative.

'5.'Thecombinatiom with a guard, of a lock-ease having an arc-bolt with a tongue movable into and out loi said lock-case, a raceway having ribs to guide the bolt in its movement, a tail-`piece projected from the boltto `engage the raceivay, means orprojecting and `retraeting the bolt and locking it in its yinoperative position,a detent to engage the bolt, andra releaser tofdisengage the detent;

6. Thecombination, ivith a lock-case hav- Y `ing an arc-bolt movable into and out of its face, of a racevvay having ribs to guide the -bolt in itsinovement, a tail-piece upon the bolt iitted to the Vracewvay, a detent and tumbler for holding the bolt detachably unlocked, a stem projected from the rear end of the bolt and a spring fitted to said stem to project thelbolt normally from the lockcase,"a releaser to operate the detent, and means to retract and hold the bolt inoperative.

7. rThe combination, With a lock-case having `an arc-bolt movable into and out Vof its 'face to engage a guard, of a detent for securing the bolt'in its unlocked position, the said `detent and bolt having eomplemental projections to automatically engage one another for holding the bolt unlocked, and a stem projected 'from the bolt, and provided with a 'spring to project the bolt normally from the loclrcase, a suitable guard for engaging the bolt when projected, means teautomatically-lock the bolt in its projeetedposition, means to retract the bolt, and means to hold the bolt-inoperative'.

S. The combination, With a loclrcase having a suitable raceway therein, oi an arcbolt' having a tail-piece fitted movably to the and a. tongue for engaging the guard, a stem projected from the bolt and provided with a spring to project the bolt normally from the lock-case, the lock having a suitableguard, means to retract/the bolt operable. veither by a key or by a -knob,'a tumbler to hold the bolt projected, a detent having .means to engage 'and to disengage the bolt, and a catch to hold the bolt retracted and inoperative.

9. A lock having an arc-bolt, a 'guidefor" thebolt, detent to engage the bolt, a re` land hold it projected, meansito retract said bolt and means to hold the bolt inoperative. n ll. In a lock'having a guard litted upon a door-jamb, means for protecting the ace- `plate from access and engagement by `a jimn'iy. or `other ftool, `which consists of a recessin the `doOnjambto which'the 'faceplate is fitted, and beveled edges'upon the face-plate to avoid the exposure Lot its edges `when the faceplate is raised in its recess.

'153. The combination, with al lock case having a curved bolt, ofa guardor striking plate having `beveled edges Varranged and operated for the purpose set forth.

13. A "lock having 'an arcesl'laped bolt, means :for projecting the-bolt, 4means for 1e tracting thebolt, a detent to engage the bolt, 1 a tumbler to engagethe detent, a releaser to disengage-th-e detent from thebolt, means to project the releaser, means to disenf the detent-tunrliler from the releaser, and a guard to engagethe bolt and the releaser.

14:. A lock having an arc-shaped bolt, means for projecting said bolt and means to retract the same, and means engaging the side of said 'bolt for automatically holdingl said bolt in its projected position.

l5. A. lock 'having an arc'shaped bolt., a

Yshoulder `on said bolt and means engaglng said shoulder disposed interiorly of the path of movement oil said bolt to hold the same projected.

16. A lock having an arc-shaped bolt, Ameans 'tor engaging said bolt `for holding thev same `in its retracted position,and automatic means for controlling the movement i of said first mentioned means.

li". .A lock having an arc-shaped bolt, a. detent Afor enga-ging said bolt and auton'iatic means for controlling the movement of said detent. `1

18. A lock having an arc-shaped belt,

Vmeans 'l'or engaging said bolt to hold the same retracted, and automatic means for controlling thevniovement of .said first-mentioned means.

19. A lock having'an arcJShaped bolt, a detent for engaging said bolt to hold the same retracted vand a tumbler orlirniting thefmovement of said detent.

Q0. A, lock having aniarcshaped bolt, fa

detent for engaging said bolt, and a tumbler for engaging' said detent.

21. A lock having an detent tor automatically anda movable member engaging said detent. i

22. A loclrhaving an arc-shaj'icd bolt, means tor holding said bolt in its retracted position, and automatic means tor `controlling and limit-ing` the movement ot said firstiiientioiied means.

23. A lock having' an arc-shaped bolt, a detent cooperating with said bolt, and means cooperating with said detent and bolt to prevent interference of the former With the latter during retraction oi the bolt.

24. A lock having an arc-shaped bolt, a detent cooperating with said bolt, and means'cooperating with said detent and bolt to prevent interference of the former with the latter during retraction ot the bolt, said meansalso assuring the proper engagement ot' the detent with the bolt to hold the same retracted. 7

25. A lock havingan arc-shaped bolt, a detent cooperating with said bolt to hold the same retracted, and means controlled by the movement of the arc-sliaped bolt to assure engagement of the detent therewith when it reaches the proper position.

26. A lock having an arc-shaped bolt, a detent cooperating with said bolt to hold the sam-e in its retracted position, and means engaging said detent to prevent the same from interfering with the movement ot' Vsaid bolt. y

27. A loclt having an arc-shaped bolt, detent cooperating with said bolt to hold the same in its retracted position, and means engaging said detent to prevent the same from interfering With the movement or" said bolt and operated by said bolt to release the detent When the bolt is fully retracted.

28. A lock having an arc-shaped bolt, a detent :tor holding the bolt retracted and automatic means to prevent said detent from interfering with said bolt during its movements and to assure the detention of the bolt when normally retracted. j

29. A lock 'having an arc-shaped bolt, means to retract said bolt, a detent, means to limit the operation of .said detent when partially moved, and means to permit the complete movement of said detent, both of said means assuring the normal retraction and detention of the bolt.

30. A lock having' an arc-shaped bolt, means to retract said bolt, and means engaging the bolt to hold the same inoperative.

V31. A loclr having an arc-shaped bolt, means to retract said bolt, and a catch to hold the bolt inoperative When in its retracted position.

arc-shaped bolt, a engaging said bolt tor automatically A lock having anv arc-shaped bolt,

means to retract said bolt, means to project said bolt, a detent directly engaging said bolt for normally holding said bolt in its retracted position, meansfor holding said detent in a given position, means for releasing said detent and -means :tor rendering said releasing means ineective.

33. A lock having an arc-shaped bolt, means to retract said bolt, means to project said bolt, a detent for normally holding said bolt retracted, means for releasing said detent, and means engaging said bolt and operable manually to dog said bolt, whereby said releasing means is rendered ineffective.

34. A lock having an arc-shaped bolt, means for projecting said bolt, means for locking said bolt infits projected position, means for retracting said bolt, said lastmentioned means operating to irst release said lock means and thentoretract said bolt, said bolt having a portion thereof engaging said locking means to holdy said bolt inv retracted position so that the return of said retractingmeans to normal position meets With nointerference.

35..A lock having an arc-shaped bolt, means' to retract said bolt, means to project said bolt, a detent for normally holding said bolt retracted, means for releasing said detent, means engaging said bolt and operable manually to render said releasing means ineffective, and means for disengaging said manually operable means.

36. A lock having an arc-shaped bolt, means for projecting said bolt, means for locking said bolt in its projected position, a common means for disengagiiig said loclring means and for retracting said bolt, means for returning said common means to its initial position, all of said means and said bolt being so arranged as to offer no interference to the return of said common means to its initial position at any point in its movement.

37. A loclr having an arcsliaped bolt, nie-ans for projecting said bolt, means for locking said bolt .in its projected'position, means common to said locking meansand said bolt for first unlocking said lockingv means and then for retracting said bolt, the parts being so arranged as to permit return of said common means to its initial position Without interference at any point in its movement, and means for returning said common means to its initial position.

38. A lock having an arc-shaped bolt, means for projecting said bolt, means for locking said bolt in its projected posit-ion, means cooperating with said locking means to unlock the same and then to directly engage said bolt to retract the same, said last mentioned means engaging said locking means until said bolt engages the same to hold said locking means out of locking eniis gagement therewith, and means for returningsaid unlocking means to its initial position; Y v

39. A lock having an arc-shaped bolt, means for projecting,V said bolt, means for locking saidv bolt in' its projected position, means cooperating with said locking means orvd'isengaging the sameV from said bolt, saidameans directly engaging-said bolt to retractithesame, and a spring for returning said'last'mentioned means to its initial position. j

4 0. A lock having an Varc-shaped bolt, meansy for projecting said bolt, a barrel havi'ngmeans tor retracting said bolt, means for holding said bolt in its projected position, said barrel cooperating-With said last mentioned means to Vdisengage the same from engagement With said bolt, anda springtoreturn said barrel toits initial position.

A4l. A lock` having an arc-shaped bolt, means for projecting said bolt, means for locking said bolt in its-projected position, a barrel cooperating iirstjvvith said locking means to unlockthe same and then with said bolt to .retract'they saine, and means comprising a coil'springfor'returning said barrel to its initial position.

42. A- lockhaving an arc-shaped bolt and a tumbler having means for engaging the `b`olt tohold the same in itsjprojected posi-V tion, and a lock barrelf having direct means for disengagingsaid bolt and tumbler.

43.', An arc-shaped boltand a tumbler-having means for interlockingivith the bolt to hold the latter in its projected position,'and

a lock-barrel having anl av saidboltk and tumbler. l

44. vAn arc-shaped bolt and` a tumbler having means'for engaging a" notch onsaid bolt for sition. Y

45. An arc-shaped bolt yhaving'L an arc( stem, a 'springadjusted to said stem, and means to holdI said'bolt in its projectedposition. Y 4 6, A lock, comprising alock barrel'liavingmeans for automatically returning the sameto its Vinitial position. Y -Y 47. In a lock, a lockbar-rel vhaving coiled` leatfspring, saidfsp'ring operating to return said barrel'to its initial position.V

48. An arc-shaped bolt, means `for projecting saidbolt, means tohold saidY bolt projected, a lock barrel having means todirectly release said holding means, means to retract the bolt, 1and means to Vreturn said lock-barrel to itsinitialv position without the return otthe bolt to its projected position.y

451A lock having anv arc.'bolt-comprising a tongue portion', a steun-a' spring, and means to hold the'bolt inoperative. 50. A lock comprising a casing, an arcuate rm for unlocking holding the latter in its rprojected por-i tail-piece projecting from sai'dbolt to engage said raceway, means for projecting and retracting said bolt and for lock-ing it in its inoperative position, and a detent to hold said boit retracted.

52. A lock having an arcuate bolt and means disposed Within( the arc defined by said boltfor holding the same inoperative.

A lock having a casing, an arc bolt adapted to be projectedfrom said casing, and a key-cylinder fastened. in said casing and havingdirect connectionivith said bolt to actuate the same.

il lock comprising a casing, an arc bolt, means to project said bolt, means to retract said bolt, a common means to hold said bolt retracted andto release said bolt 'for projection and nieansto hold said, bolt inoperative.

55. A.' lock having an arc-shaped bolt consisting'oil a bolt portion, a tailportion and a stem for a spring overlying saidtail portion. f

56. A lock bolt tumbler, and a slidable detent cooperating With said tumbler.

57. In a lock, a casing, an arc bolt, meansV to project said-bolt, means to retract said bolt, meansV directly engaging said bolt to hold, the same retracted' and which is ada ted to release said bolt, andmeans to renc er ineffective said releasing means.

:38..An arc bolt lock com )rising an arc bolt, means to project Vsaid olt, means to retract said bolt, common means to hold said bolt retracted and to release the same for projection, and means` to render said commonnieans ineiiective.` Y

59. A lock having an arc bolt, a guideway.. to direct the bolt in an` arcuate path, means to project the bolt, means to hold said boit projected, and a key 4cylindeinto.actuate said bolt. j Y

j A lock having an arc bolt, a guideway todirect the bolt in an Varcuate path, and a key cylinder lock `to. operate said bolt.

6l. A lock havingH an arc-shaped bolt,

means for holding the boltin its *project-edi cLivEW. LaNrHiini-i.

DISCLAIMER.

1,543,930.0Zz're W. Lanpzerc, New York, N. Y. INTERLOCKING AUTOMATIC Loon. Patent dated June 30, 1925. Disclaimer filed October 18, 1927, by the patentee.

Hereby enters this disclaimer to those claims in said specification which are in the following Words, to wit:

16. A lock having an arc-shaped bolt, means for engagingsaid bolt for holding the saine in its retracted position, and automaticv means for/controlling the movement of said first mentioned means. Y

17. A lock having an arc-shaped bolt, a detent for engaging said bolt, and automat-ic means for controlling the movement of said detent.

18. A lock having an arc-shaped bolt, means for engaging said bolt to hold the same retracted, and automatic means for controlling the movement of said firstmentioned means.

25. A lock having an arc-shaped bolt, a detent cooperating with said bolt to hold the saine retracted, and means controlled by the movement of the arc-shaped bolt ,to assure engagement of the detent therewith when it reaches the proper position.

30. A lock having an arc-shaped bolt, means to retract said bolt, and means engaging the bolt to hold the saine inoperative.

31. A lock having an arc-shaped bolt, means to retract said bolt, and a catch to hold the bolt inoperative when in its retracted position.

42. A lock having an arc-shaped bolt and a tumbler having means for engaging the boltto hold the same in its projected position, and a lock-barrel having direct means for disengaging said bolt and tumbler.

413. An arc-shaped bolt and a tumbler having means for interlocking Vwith the bolt to hold the latter' in its projected position, and a lock-barrel having an arm for unlocking said bolt and tumbler.

52. A lock having an arcuate bolt, and means disposed Within the arc defined by said bolt for holding the same inoperative.

61. A lock having an arc-shaped bolt, means for holding the bolt 1n its proJected position, and a lock-barrel having means for directly releasing said holding means.

[Oficial Gazette November 8, 1927.] 

